Question

Five equal resistors when connected in serie
dissipated 5 watt power. If they are connecte
in parallel, the power dissipated will be
A) 68 watt
(B) 32 watt
( 125 watt
(D) 96 watt​

Answer 1

Answer:

Five equal resistors when connected in series dissipated 5W power. If they are connected on parallel the Power dissipated will be what?

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Assume voltage is 5 and each resistor is 1 ohm

When all 5 resistors connected in series total resistance is 5 ohms

Power dissipated in all resistors is v^2/r=25/5=5w

If all connected in parallel resultant resistance is 1/5=0.2 ohms

Power dissipated is 25/0.2=125 watts

so answer is option c 125 watts